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* fhandler.h (fhandler_tty_slave): Declare new methods.

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* select.cc (fhandler_tty_slave::select_read): New method.
* select.cc (fhandler_tty_slave::ready_for_read): Ditto.
* select.cc (verify_tty_slave): New function.
* fhandler_termios.cc (fhandler_termios::line_edit): Empty input
buffer on signal.
* fhandler_tty.cc (fhandler_tty_slave::read): Check for input data
after reading from pipe. Reset event if input pipe is empty.
* tty.h (class tty): Allow creating events with manual reset.
* tty.cc (tty::get_event): Use manual_reset flag.
* tty.cc (tty::common_init): Create input_available_event with
manual reset.
This commit is contained in:
Egor Duda
2001-03-18 18:05:01 +00:00
parent ca1cea7ed3
commit 5e8e21d938
7 changed files with 83 additions and 7 deletions
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47
winsup/cygwin/select.cc
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@@ -743,6 +743,53 @@ fhandler_tty_common::select_except (select_record *s)
return ((fhandler_pipe *)this)->fhandler_pipe::select_except (s);
}
static int
verify_tty_slave (select_record *me, fd_set *readfds, fd_set *writefds,
fd_set *exceptfds)
{
if (WaitForSingleObject (me->h, 0) == WAIT_OBJECT_0)
me->read_ready = 1;
return set_bits (me, readfds, writefds, exceptfds);
}
select_record *
fhandler_tty_slave::select_read (select_record *s)
{
if (!s)
s = new select_record;
s->h = input_available_event;
s->startup = no_startup;
s->poll = poll_pipe;
s->verify = verify_tty_slave;
s->read_selected = TRUE;
s->cleanup = NULL;
return s;
}
int
fhandler_tty_slave::ready_for_read (int fd, DWORD howlong, int ignra)
{
HANDLE w4[2];
if (!ignra && get_readahead_valid ())
{
select_printf ("readahead");
return 1;
}
w4[0] = signal_arrived;
w4[1] = input_available_event;
switch (WaitForMultipleObjects (2, w4, FALSE, howlong))
{
case WAIT_OBJECT_0 + 1:
return 1;
case WAIT_FAILED:
select_printf ( "wait failed %E" );
case WAIT_OBJECT_0:
case WAIT_TIMEOUT:
default:
return 0;
}
}
select_record *
fhandler_dev_null::select_read (select_record *s)
{